Creating and Saving Custom Sizes for the Windows V3 Print Driver
1. In the print driver, click the Printing Options tab.
2. For Paper, click the arrow, then select Other Size > Advanced Paper Size > Output Paper Size > New.
3. In the New Custom Paper Size window, enter the height and width of the new size.
4. To specify the units of measurement, at the bottom of the window, click Measurements, then select Inches or Millimeters.
5. To save, in the Name field, type a title for the new size, then click OK.